1. Division of Research, Kaiser Permanente Northern California, Oakland2Department of General Internal Medicine, University of California, San Francisco3Department of Epidemiology, University of Washington, Seattle 4Department of Health Services, University of Washington, Seattle
2. Division of Research, Kaiser Permanente Northern California, Oakland
3. Section of Endocrinology, Department of Internal Medicine, Yale School of Medicine, New Haven, Connecticut
4. Kaiser Permanente Washington Health Research Institute, Seattle
5. Section of General Internal Medicine, Department of Medicine, University of Chicago, Chicago, Illinois
6. Center for Healthcare Organization and Implementation Research, Edith Nourse Rogers Memorial Veterans Hospital, Bedford, Massachusetts